reactos/subsystems/ntvdm/callback.h

   1 /*
   2  * COPYRIGHT:       GPL - See COPYING in the top level directory
   3  * PROJECT:         ReactOS Virtual DOS Machine
   4  * FILE:            callback.h
   5  * PURPOSE:         32-bit Interrupt Handlers
   6  * PROGRAMMERS:     Aleksandar Andrejevic <theflash AT sdf DOT lonestar DOT org>
   7  *                  Hermes Belusca-Maito (hermes.belusca@sfr.fr)
   8  */
   9
  10 #ifndef _CALLBACK_H_
  11 #define _CALLBACK_H_
  12
  13 /* DEFINES ********************************************************************/
  14
  15 /* 32-bit Interrupt Identifiers */
  16 #define EMULATOR_MAX_INT32_NUM  0xFF + 1
  17
  18 typedef struct _CALLBACK16
  19 {
  20     ULONG  TrampolineFarPtr; // Where the trampoline zone is placed
  21     ULONG  TrampolineSize;   // Size of the trampoline zone
  22     USHORT Segment;
  23     USHORT NextOffset;
  24 } CALLBACK16, *PCALLBACK16;
  25
  26 extern const ULONG Int16To32StubSize;
  27
  28 /* FUNCTIONS ******************************************************************/
  29
  30 typedef VOID (WINAPI *EMULATOR_INT32_PROC)(LPWORD Stack);
  31
  32 VOID
  33 InitializeContext(IN PCALLBACK16 Context,
  34                   IN USHORT      Segment,
  35                   IN USHORT      Offset);
  36
  37 VOID
  38 Call16(IN USHORT Segment,
  39        IN USHORT Offset);
  40
  41 ULONG
  42 RegisterCallback16(IN  ULONG   FarPtr,
  43                    IN  LPBYTE  CallbackCode,
  44                    IN  SIZE_T  CallbackSize,
  45                    OUT PSIZE_T CodeSize OPTIONAL);
  46
  47 VOID
  48 RunCallback16(IN PCALLBACK16 Context,
  49               IN ULONG       FarPtr);
  50
  51 ULONG
  52 RegisterInt16(IN  ULONG   FarPtr,
  53               IN  BYTE    IntNumber,
  54               IN  LPBYTE  CallbackCode,
  55               IN  SIZE_T  CallbackSize,
  56               OUT PSIZE_T CodeSize OPTIONAL);
  57
  58 ULONG
  59 RegisterInt32(IN  ULONG   FarPtr,
  60               IN  BYTE    IntNumber,
  61               IN  EMULATOR_INT32_PROC IntHandler,
  62               OUT PSIZE_T CodeSize OPTIONAL);
  63
  64 VOID
  65 Int32Call(IN PCALLBACK16 Context,
  66           IN BYTE IntNumber);
  67
  68 VOID WINAPI Int32Dispatch(LPWORD Stack);
  69 VOID InitializeCallbacks(VOID);
  70
  71 #endif // _CALLBACK_H_
  72
  73 /* EOF */